p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

NVMe: Include device and queue numbers in interrupt name 

On larger systems with many drives, it may help debugging to know which
queue is tied to which interrupt, just by looking at /proc/interrupts.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This commit is contained in:
Matthew Wilcox 2014-01-27 15:57:22 -05:00
parent 09ece1424f
commit 3193f07bb7
1 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/block/nvme-core.c
View File

@ -76,6 +76,7 @@ struct async_cmd_info {
struct nvme_queue {
struct device *q_dmadev;
struct nvme_dev *dev;
char irqname[24]; /* nvme4294967295-65535\0 */
spinlock_t q_lock;
struct nvme_command *sq_cmds;
volatile struct nvme_completion *cqes;
@ -1235,6 +1236,8 @@ static struct nvme_queue *nvme_alloc_queue(struct nvme_dev *dev, int qid,
nvmeq->q_dmadev = dmadev;
nvmeq->dev = dev;
snprintf(nvmeq->irqname, sizeof(nvmeq->irqname), "nvme%dq%d",
dev->instance, qid);
spin_lock_init(&nvmeq->q_lock);
nvmeq->cq_head = 0;
nvmeq->cq_phase = 1;
@ -1297,7 +1300,7 @@ static int nvme_create_queue(struct nvme_queue *nvmeq, int qid)
if (result < 0)
goto release_cq;
result = queue_request_irq(dev, nvmeq, "nvme");
result = queue_request_irq(dev, nvmeq, nvmeq->irqname);
if (result < 0)
goto release_sq;
@ -1415,7 +1418,7 @@ static int nvme_configure_admin_queue(struct nvme_dev *dev)
if (result)
return result;
result = queue_request_irq(dev, nvmeq, "nvme admin");
result = queue_request_irq(dev, nvmeq, nvmeq->irqname);
if (result)
return result;
@ -1873,6 +1876,7 @@ static size_t db_bar_size(struct nvme_dev *dev, unsigned nr_io_queues)
static int nvme_setup_io_queues(struct nvme_dev *dev)
{
struct nvme_queue *adminq = dev->queues[0];
struct pci_dev *pdev = dev->pci_dev;
int result, cpu, i, vecs, nr_io_queues, size, q_depth;
@ -1899,7 +1903,7 @@ static int nvme_setup_io_queues(struct nvme_dev *dev)
}
/* Deregister the admin queue's interrupt */
free_irq(dev->entry[0].vector, dev->queues[0]);
free_irq(dev->entry[0].vector, adminq);
vecs = nr_io_queues;
for (i = 0; i < vecs; i++)
@ -1937,9 +1941,9 @@ static int nvme_setup_io_queues(struct nvme_dev *dev)
*/
nr_io_queues = vecs;
result = queue_request_irq(dev, dev->queues[0], "nvme admin");
result = queue_request_irq(dev, adminq, adminq->irqname);
if (result) {
dev->queues[0]->q_suspended = 1;
adminq->q_suspended = 1;
goto free_queues;
}